Matt Bevin, a Louisville businessman with support from Kentucky tea party activists, plans to challenge Senate Minority Leader Mitch McConnell in the 2014 GOP Senate primary.

Bevin, a partner in a hedge fund group, plans to make his announcement at the Kentucky statehouse in Frankfort Wednesday morning; and go on to campaign stops in Newport and Louisville later in the day.

Challenging an incumbent U.S. Senator is always difficult; and McConnell already has $10 million in his campaign account and the support of a Super PAC called Kentuckians for strong leadership.